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WO2002012594A3 - Treatment process for waste from aluminium production cells - Google Patents

Treatment process for waste from aluminium production cells Download PDF

Info

Publication number
WO2002012594A3
WO2002012594A3 PCT/BR2001/000095 BR0100095W WO0212594A3 WO 2002012594 A3 WO2002012594 A3 WO 2002012594A3 BR 0100095 W BR0100095 W BR 0100095W WO 0212594 A3 WO0212594 A3 WO 0212594A3
Authority
WO
WIPO (PCT)
Prior art keywords
gases
utilization
heating
refined
wastes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/BR2001/000095
Other languages
French (fr)
Other versions
WO2002012594A2 (en
Inventor
Oliveira David Goncalves De
Lamas Alex Paulo Rocio
Jose Roberto Varela
Rubens Habesh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SERVIBRAS-SERVICOS ESPECIAIS INDUSTRIA E COMERCIO
SERVIBRAS SERVICOS ESPECIAIS I
Original Assignee
SERVIBRAS-SERVICOS ESPECIAIS INDUSTRIA E COMERCIO
SERVIBRAS SERVICOS ESPECIAIS I
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SERVIBRAS-SERVICOS ESPECIAIS INDUSTRIA E COMERCIO, SERVIBRAS SERVICOS ESPECIAIS I filed Critical SERVIBRAS-SERVICOS ESPECIAIS INDUSTRIA E COMERCIO
Priority to AU2001276199A priority Critical patent/AU2001276199A1/en
Publication of WO2002012594A2 publication Critical patent/WO2002012594A2/en
Publication of WO2002012594A3 publication Critical patent/WO2002012594A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/40—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by heating to effect chemical change, e.g. pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1325—Hazardous waste other than combustion residues
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The present claim refers to the obtainment of carbon and ceramic residues refined to a degree of purity that may render them fit for utilization in several other production process, as well to the recuperation of fluoride and oxides which re-utilization is economically desired. Last but not least important is the feature that extinguished the need for special warehousing of electrolytic cells wastes, as this process withdraws and eliminates all toxic wastes, which are presently classified as Class I Environmental Risk. The process is a clan process , based on the heating of the material to be refined at high temps, therefore destroying all cyanides contained in the original material. Heating may take place in any t type of atmosphere and impurities are drawn out by gravity and by release of gas and water steam, and are separated in the collectors, condensers and special filters. The gases in movement may be also the vapours and gases generated during the distillation or they could be released by the material added to the residue load, which could also generate steam or gases at process temps.
PCT/BR2001/000095 2000-08-04 2001-07-30 Treatment process for waste from aluminium production cells Ceased WO2002012594A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001276199A AU2001276199A1 (en) 2000-08-04 2001-07-30 Treatment process for waste from aluminium production cells

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0004425 2000-08-04
BR0004425-3A BR0004425C1 (en) 2000-08-04 2000-08-04 Refining process of spent electrolytic vat from aluminum metal extraction

Publications (2)

Publication Number Publication Date
WO2002012594A2 WO2002012594A2 (en) 2002-02-14
WO2002012594A3 true WO2002012594A3 (en) 2002-08-15

Family

ID=3945328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2001/000095 Ceased WO2002012594A2 (en) 2000-08-04 2001-07-30 Treatment process for waste from aluminium production cells

Country Status (3)

Country Link
AU (1) AU2001276199A1 (en)
BR (1) BR0004425C1 (en)
WO (1) WO2002012594A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006086868A1 (en) * 2005-02-16 2006-08-24 Novafrit International Inc. Process and apparatus for converting spent potliners into a glass frit, and resulting products
CN106629606A (en) * 2016-11-07 2017-05-10 中国铝业股份有限公司 Method for separating fluoride salt and carbon in aluminum electrolysis carbon residues

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2059403A (en) * 1979-08-29 1981-04-23 Alcan Res & Dev Treatment of fluoride- containing waste
EP0465388A1 (en) * 1990-07-04 1992-01-08 Aluminium Pechiney Process for the treatment of spent potlinings from Hall-Heroult electrolytic cells by thermal shock
US5222448A (en) * 1992-04-13 1993-06-29 Columbia Ventures Corporation Plasma torch furnace processing of spent potliner from aluminum smelters
US5746987A (en) * 1995-10-18 1998-05-05 Thermall Corp. Apparatus for physical amd chemical separation and reaction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2059403A (en) * 1979-08-29 1981-04-23 Alcan Res & Dev Treatment of fluoride- containing waste
EP0465388A1 (en) * 1990-07-04 1992-01-08 Aluminium Pechiney Process for the treatment of spent potlinings from Hall-Heroult electrolytic cells by thermal shock
US5222448A (en) * 1992-04-13 1993-06-29 Columbia Ventures Corporation Plasma torch furnace processing of spent potliner from aluminum smelters
US5746987A (en) * 1995-10-18 1998-05-05 Thermall Corp. Apparatus for physical amd chemical separation and reaction

Also Published As

Publication number Publication date
AU2001276199A1 (en) 2002-02-18
WO2002012594A2 (en) 2002-02-14
BR0004425C1 (en) 2001-08-21
BR0004425A (en) 2001-02-28

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